Great replies, everyone. Thanks!
Hanzze, the sutta is greatly appreciated. If you have any more along these lines, anything to do with arts, don't hesitate to post them here or privately in a pm.
As regards engaged Buddhist principles, I'm looking for Buddhist artists concerned with social justice, who see suffering (at least in part) as a product of the systems in which we live - economic, social, and political. My personal interest in is visual arts, but references to all kind of artists would be equally appreciated.
Even poetry. But not contemplative poetry. Not art that looks in, but looks out. Banksy is a good example - is he Buddhist?